Council of Scientific and Industrial Research

National Mineral Development Corporation Limited

National Aluminium Company Limited

Kali Sanjay

Barada Kanta Mishra

Chinmaya Kumar Sarangi

Parthasarathi Datta

Snehasis Behera

Malay Kumar Ghosh

Indra Narayan Bhattacharya

Barsha Dash

Abdul Rauf Sheik

Tondepu Subbaiah

Radhanath Prasad Das

B V Raman Murthy

Sashi Anand

Subir Das

Bhuban Lal Agarwal

Sudipta Das

Vakil Singh

Rajendra Kumar Singhvi

Anil Kanta Tripathy

Kodli Hiranya Varna Prasad

Indira Narayan Bhattacharya

Hari Simha

Ramchandra Nagesh Parlikar

Baij Nath Mittal

Ugle Ashutosh

Kataram Rajeswara Rao

Gajula Venkata Yugandhar

Karnam Srinivas Rao

A hydrometallurgical process is provided for the recovery of tellurium as elemental tellurium powder from copper refinery anode slime containing high amount of lead. The process involves the removal of copper and lead from anode slime followed by the recovery of tellurium as elemental powders. An economical and environment friendly process is provided for producing tellurium from a high lead bearing anode slime as it involves only hydrometallurgical techniques and thereby avoids emission of any polluting gases and has an efficiency of 85 to 90%. The developed process of recovering tellurium as elemental powders from copper refinery anode slime is beneficial in the production of pure tellurium instead of tellurium compounds. It helps raise the profit margin of a non-ferrous metal industry dealing with extraction of copper from ores and treatment of anode slime for the recovery of other metal values.

Hydrometallurgical process for the recovery of tellurium from high lead bearing copper refinery anode slime

Growing community of inventors

Orissa, India

Kali Sanjay